William buttler



No. 617,923. Patented 1an. I7, |899.

` f' W. BUTTLEH.

- A. ,MANUFCTURE 0F GLASS CYLDERS.

l{Aqnplicaticm filed Mar. 31, 1898.) (N0 Model.) 2 Sheets-Sheet I.

.../.iii 8 f Cama.

La di@ WBTNESSES dientes Pesenti" @errent lYlLLlAlll BUTTLER, OF REDKEY, l` TFIANA.

MANUCTURE 0F GLASS CYLlNDE'RS.

SFECEFGATION forming part of Letters Patent No. 617,928, dated January 17, 1399. Application led llhrch 31, 1898. Serial No, 675,870. (No model.)

To at! roll/om, it may concern:

Ee it known that I, WILLIAM BUTTLER, of Redkey., in the county of .lay and State of lndiana, have invented a new and useful lmprovement in the Manufacture oi' Glass Oylinders, of which the following is a full, clear, nud exact description, reference hein g had to the accompanying drawings, forming part of this specification, in which- Figure l is a side elevation, partly in section, o'l' the improved apparatus I employ; and Fig. 2 is a similar vieuT showing the parts in a different position.

hij; invention relates to the formation of glass cylinders or rollers by menus of an internal former, and is an improvement upon the invention set forth in my prior application. dei-iai Io. 051,785, filed December le, 1397, for i" ctlroil of and apparatus for making gloss rollers.

rdravrings, 2 2 represent a' pair of ver i stsndnrds having upper bearings 3 3, in which is carried the horizontal hollow shaft Ll, to the projecting end of which is secured t" e metal shell 5. yTo one end of this shell is secured a ring or ilange G, having a dovetai l connection with a tivo-part mold-ring if '7, which is provided with nu inner annular S. Vfithln the shell and ininiediutelj)T below this recess is e movable clamping-ring o, suiniorted upon links `lO, pivotally connected with cranks ll upon n rock-shaft 12, carried in suitable bearings in the shell. One end of this rocleshaft projects through 4 n smiling-box 13 in the shell and is provided with nn ectunting-h'ainllc ll which may be l ny adjusted no lon by n spring gger l5, arranged to enter suitable areshnped lock-pl te lf secured The linlis 10ers guided in their nts in suitable intermediate bearin gs l?. lt the other end of the shell is secured a head 1S, provided with a suitable stuilinghoff; lf), through which posses the stein 20 of j n hollow cylindrical shnper 2l, which is preferably ol' the size and length of the glass cylinder desired to be made. The stein 2O has t spline connection with bevel-gear 22, actuated by n shnlt S33, extending centrally through the hollow shaft 4 and through a stuffing-box 2l nt thc ond of the hollow shaft. The hollow shaper and stein muy be" reciprois normally held projected, as shown in Fig.

l, by a spiral spring 2S, surrounding the en? teruel portion of the stem between a collar thereon and the head of the shell.

In order to block the glass which is dropped 'into the moldming7 l provide a block 29, se-

cured to a vertical shaft 30, carried in bearings on arni 3l und actueted by bevelegeer 32, which connects it with a shaft 33, elso mounted in bearings on the arm. This erm is carried upon e sleeve which loosely surrounds a vertical shaft 35, supported in suitable bearings upon an extended portion of the standard 2. The shaft driven by n bevel-wheel 3G, interineshing with n bevel- Wheel 37, having a spline connection with the shaft 35, which is driven by suitable bevelgear 38 at its lower end. The coller 3e, with its arm, is normally held elevated by o. spirel spring 39, surrounding the shaft 35, and it is evident that with the construction shown the erin moy be swung about the shaft sind moved vertically, while the block may be rotated in any desired position.

The operation is ns follows: The bloei; being swung to one sido of the shell, molten glass is dropped upon the upper end of the shnperand the mold-ring clamped place at the upper end of the shell. The bloclithen being swung into the position shown in Fig. l is snitebly rotated so as to block the glass, which has pre viously been forced into the ennnlnr recess in the ring and clamped. in such moi/'able clamping-ring il. '.lhe lilo being raised and swung to one side, the

ratus is swung over upon the sha1 t so es to bring the glass Within the mold-ng to lowerend of theshell, andthe int nleh -vents its being drawn tightly against the former. lt is not intended that suiiicient air pressure shallbe provided to increase the ditheir blowpipes, so as to assist in the elongaltion of the cylinder. lVhen the glass cylinder has thus been formed, the internal former is retracted, and the mold then being unclamped the nished cylinder may be removed.

The advantages of my invention will be ap-v parent to those skilled in the art. The cylinder is quickly and easily formed Without the prior formation of any hollow blank. The glass may be blocked so as to distribute it evenly, and as the glass tends to elongate by reason of its weight and the supporting shell may be swung back and forth all the advantages of the hand method are present, while the inner shaper insures a perfect cylinder of the same thickness and diameter throughout and that without the use of skilled labor. As the former is rotated while the cylinder is being formed a finely-finished surface will be obtained upon the interior ofthe roller, while the air-pressure prevents the cylinder from pinching about the shaper or former during its formation. /f

Instead of -rotating the former during the formation of the cylinder the mold, with its blank, may be rotated about the former, or the former, the mold, and the glass may all l be rotated togetherywhile the mold and former are moved longitudinally relative to each other.r An outside mold may be clamped around the cylinder after it is stretched. The

blocking may be dispensed with and the device may be used with or without an airpressure, and many other variations may be made without departing from my invention, since What I claim isl.4 The method of forming glass rollers consisting in dropping the glass into a shallow holder, holding its edges, and stretching the same longitudinally beyond the end of the holder over an internal former.

' 2. The method of forming glass rollers, consisting in dropping the glass into a holder, securing its edges'blocking or shaping the glass therein, and then stretching the same longitudinally beyond the holder.

3. The method of forming-glass rollers, cony,sisting in dropping the into a holder,

clampingits edges, stretching the same longitudinally over an internal former, and swinging the glass-carrier back and forth with an oscillatory motion during the formation of theroller.

' 4. The method of forming glass cylinders,

consisting in dropping the glass into a holder,

securingits edge portions,stretching the same longitudinally beyond the holder over an internal former, and forcing air between the blank and the former.

5. The method of makin g glass rollers consisting in dropping the glass into a holder, blocking the glass therein, clamping its edge portions, reversing the glass-holder so the glass will tend to elongate downwardly, and then stretching the glass longitudinally over an internal former.

G. In apparatus for forming glass cylinders, the combination with a shallow mold and an internal former of greater length than the mold, of means for moving one of said parts longitudinally of the other, and means for rotating at least one of said parts.

7. In apparatus for forming glass cylinders, the combination with a shallow mold arranged to hold the edge portions of the glass dropped therein, of a rotary internal former of greater length than the mold, and means for moving the mold and former longitudinally relatively to each other to stretch the glass beyond the mold.

8. In apparatus for forming glass cylinders,

a hollow shell, a shallow mold carried thereon, a hollow former within the shell and of much greaterlength than the mold, and means for moving the mold and former relatively to each other to stretch the glass beyond the mold.

9. In apparatus for forming glass cylinders, a shell arranged t0 swing freely toiand fro, a mold mounted thereon, and means for supplying air to the shell.

l0. In apparatus for forming glass cylinders, a swinging support, a mold carried thereon, an internal former of greater length than the mold, and means for moving the mold and former relatively to each other to stretch the glass beyond the mold. v

l1. In apparatus for forming glass cylinders, the combination with a mold, of means for holding the edge portion of glass dropped into the mold, an internal former arranged to stretch the glass longitudinally beyond the mold, and means for moving the former and mold relatively to each other.

12. In apparatus for forming glass cylinders, a swinging support, a mold at one end of the same arranged to receive and hold the edge portions of the glass, an internal former, and means for forein g the same through the mold so as to shape a cylinder over it.

13. In apparatus for forming glass cylinders, a swinging shell, a mold carried upon the same and having means for clamping glass dropped thereinto, a rotatable hollow former, and means for moving the mold and former relatively to each other so as to stretch the glass lover the former.

14.. Inapparatus for forming glass cylinders, a hollow shell, a mold carried at one end of the same, a former which is of greaterlength than the mold and forms its bottom, means for clamping the glass dropped into the mold, and means for forcing the former longitudinally through the mold so as'to stretch the glass. y

l5. In apparatus for forming glass cylin- IOO IIO

ders, a swinging support carrying a glass ring or mold, a block arranged to shape the: glass in the mold, and an internal former of greater length than the mold arranged to be 15 moved through and beyond the mold and stretch the glass over it.

yln testimony whereof I yhave hereunto set my hand.

WILLIAM BUTTLER.

Witnesses FRED WOLTJEN, M. L. BURGESS. 

